CN201041822Y - A mobile communication terminal antenna and main board circuit connection structure - Google Patents
A mobile communication terminal antenna and main board circuit connection structure Download PDFInfo
- Publication number
- CN201041822Y CN201041822Y CNU2007201087845U CN200720108784U CN201041822Y CN 201041822 Y CN201041822 Y CN 201041822Y CN U2007201087845 U CNU2007201087845 U CN U2007201087845U CN 200720108784 U CN200720108784 U CN 200720108784U CN 201041822 Y CN201041822 Y CN 201041822Y
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- circuit
- mobile communication
- communication terminal
- antenna
- circuit board
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Abstract
A connection structure of a mobile communication terminal antenna and a main-board circuit comprises an antenna (1), a circuit-board ground-end contact surface (4), an antenna short-circuit pin (3) that is directly electrically connected with the circuit-board ground-end contact surface (4), a circuit-board feed contact surface (6), an antenna feed pin (7) that is directly electrically connected with the circuit-board feed contact surface (6), and a mobile communication terminal main-board ground circuit board (2). The connection structure is characterized in that a combinational circuit (5) is arranged between the circuit-board ground-end contact surface (4) and the mobile communication terminal main-board ground circuit board (2); the combinational circuit (5) consists of a general 0402-model bonded resistance or a capacitor or an inductance or a combinational circuit of the resistance, the combinational circuit (5) is arranged on the mobile communication terminal main-board circuit board. Compared with the prior art, the utility model has the advantages that the SAR value can be effectively reduced on the basis of guaranteeing the receiving and the transmitting performances of the antenna maximally, and the types of the antenna are not limited; at the same time, the structure is convenient to use and has low cost.
Description
Technical field
The utility model relates to a kind of circuit connection structure, particularly relates to a kind ofly can effectively reducing the mobile communication terminal antenna of specific absorption rate (SAR) value and the syndeton of motherboard circuit.
Background technology
Fast development along with mobile communication technology, and the extensive use of mobile communication system, end product as mobile communication system, mobile phone develops towards the direction of miniaturization, intellectuality and high performance, the quality of mobile phone and performance particularly just more and more are subject to people's attention the qualities such as side effect that health is brought.
In today that mobile phone is popularized, people have begun to pay close attention to the influence of electromagnetic wave to human body.Can not produce ionisation effect to tissue although proved the electromagnetic radiation of wireless communication terminal, electromagnetic wave can be converted into heat energy in tissue form is absorbed by the body.Currently can assess the temperature effect of electromagnetic wave in tissue with emf probe.User more and more strong request is not reducing under the prerequisite that has the mobile communication terminal device performance now, mobile communication terminal must have low electromagnetic radiation index, for guaranteeing mobile phone user's safety, some Electromagnetic Radiation Standards are put into effect, and all mobile phones will meet these radiation danger criterions.A kind of mode is exactly by reducing the mobile phone transmitting power and adjusting method that radio-frequency (RF) power amplification reduces conduction mode power output down and reduce aerial radiation power and the reduction radiation index S AR value to human body, but there is strict demand the GSM standard the inside to power output under the conduction mode, such as the 5th grade of power requirement among the GSM900 is 33 ± 2dBm, consider ripple and discrete distribution factor, the 5th grade of general inconvenience of power is adjusted conducted power less than 32dBm among the GSM900.The radiant power or the SAR value of antenna are reduced again, must start with from the performance of antenna.
The configuration design that a kind of antenna technology that high-performance built-in aerial technology produces under this demand just, built-in aerial not only can make mobile communication terminal more freely, size is littler, can also realize lower SAR value and higher peak gain.For example, publication number is that the Chinese invention patent " mobile communication terminal built-in antenna " of CN1423365 discloses a kind of like this built-in aerial: it comprises conductive unit, is made of a printed circuit board, and a metal-stripping district is arranged at the top of described conductive unit; Antenna element is made of a printed circuit board, and with vertical connection of metal-stripping district at described conductive unit top, described antenna element has grounding leg and the feed pin that links to each other with circuit in the described mobile communication terminal; Antenna parasitic element, the one end links to each other with described antenna element, the other end and described antenna element interval and parallel.This built-in aerial has smaller volume, can effectively be operated in the GSM/DCS frequency range, and has medium gain and lower SAR.
The adjustment that above-mentioned disclosed built-in aerial is done in the configuration aspects of antenna, though can make the overall performance of antenna improve, test out and have medium gain and relatively low SAR effect, but do not carry out extra improvement in addition at the SAR value especially, if wish that the SAR value is littler, simultaneously can also satisfy antenna performance, also need to do further improvement; And above-mentioned built-in aerial is the antenna of printed board type, and the antenna for traditional sheet metal type will reduce the SAR value, still anxious undoubtedly problem that need to wait solution.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of at above-mentioned prior art can effectively reduce the SAR value, and to the type of built-in aerial mobile communication terminal antenna that have no requirement, easily manufactured and motherboard circuit syndeton.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of mobile communication terminal antenna and motherboard circuit syndeton, comprise antenna, circuit board ground end in contact face, the antenna short circuit pin that is connected with circuit board ground end in contact face conduction, circuit board feedback point contact-making surface, the antenna feed pin that is connected with circuit board feedback point contact-making surface conduction, mobile communication terminal mainboard earthed circuit plate, it is characterized in that: between described circuit board ground end in contact face and mobile communication terminal mainboard earthed circuit plate, be provided with the combinational circuit of the general SMD resistance of 0402 type or this resistance combination, be mounted on the mobile communication terminal motherboard circuit plate.
The combinations thereof circuit also can be the general SMD electric capacity of 0402 type or the combination of this electric capacity, is mounted on the mobile communication terminal motherboard circuit plate.
The combinations thereof circuit also can be the general SMD inductance of 0402 type or the combination of this inductance, is mounted on the mobile communication terminal motherboard circuit plate.
The combinations thereof circuit also can be the general SMD resistance of 0402 type or the combination of electric capacity or inductance, is mounted on the mobile communication terminal motherboard circuit plate.
At mobile communication terminal without type and model, only need just can adjust the SAR value by adjusting resistance or electric capacity or inductance or its combinational circuit, in the hope of reaching desirable radiant power and SAR balance, and for the antenna type of mobile communication terminal without limits.
Compared with prior art, advantage of the present utility model is: above-mentioned syndeton can effectively reduce the SAR value on the basis of the transmitting-receiving performance that guarantees antenna to greatest extent, and to the type of antenna without limits, simultaneously, this structure applications is convenient, and is with low cost.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is a combinational circuit circuit connection structure schematic diagram among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～2, be embodiment of the present utility model, include antenna 1, mobile communication terminal earthed circuit plate 2, antenna short circuit pin 3, circuit board ground end in contact face 4, Chip-R, electric capacity, inductance or its combinational circuit 5, circuit board feedback point contact-making surface 6, antenna feed pin 7.
Present the circuit signal input/output terminal that some contact-making surfaces 6 connect portable terminal with antenna feed pin 7 contacted circuit boards, be used for the signal input and output of antenna; Antenna short circuit pin 3 contacts with circuit board ground end in contact face 4;
Generally, the earthed circuit plate 2 of mobile communication terminal, be the reference ground of the earthed circuit plate of monoblock mobile communication terminal, all be to spread copper, the centre of the earthed circuit plate 2 of mobile communication terminal has sub-fraction not have floor file (promptly not spreading copper), be equivalent to draw a part of copper in the centre of the earthed circuit plate 2 of mobile communication terminal, repaving more, the copper forming circuit plate ground end in contact face 4 and the ground on every side of fraction isolate, be that circuit board ground end in contact face 4 directly is not connected with mobile communication terminal earthed circuit plate 2, pass through Chip-R between them, electric capacity, inductance or its combinational circuit 5 connect, this combinational circuit also can be a resistance, the combinational circuit that electric capacity or inductor combination form constitutes, and is mounted on the mobile communication terminal motherboard circuit plate.
Claims (4)
1. mobile communication terminal antenna and motherboard circuit syndeton, comprise antenna (1), circuit board ground end in contact face (4), the antenna short circuit pin (3) that is connected with circuit board ground end in contact face (4) conduction, circuit board feedback point contact-making surface (6), the antenna feed pin (7) that is connected with circuit board feedback point contact-making surface (6) conduction, mobile communication terminal mainboard earthed circuit plate (2), it is characterized in that: be provided with the SMD resistance of general 0402 type between described circuit board ground end in contact face (4) and mobile communication terminal mainboard earthed circuit plate (2), resistance is mounted on the mobile communication terminal motherboard circuit plate.
2. mobile communication terminal antenna and motherboard circuit syndeton, comprise antenna (1), circuit board ground end in contact face (4), the antenna short circuit pin (3) that is connected with circuit board ground end in contact face (4) conduction, circuit board feedback point contact-making surface (6), the antenna feed pin (7) that is connected with circuit board feedback point contact-making surface (6) conduction, mobile communication terminal mainboard earthed circuit plate (2), it is characterized in that: be provided with the SMD electric capacity of general 0402 type between described circuit board ground end in contact face (4) and mobile communication terminal mainboard earthed circuit plate (2), electric capacity is mounted on the mobile communication terminal motherboard circuit plate.
3. mobile communication terminal antenna and motherboard circuit syndeton, comprise antenna (1), circuit board ground end in contact face (4), the antenna short circuit pin (3) that is connected with circuit board ground end in contact face (4) conduction, circuit board feedback point contact-making surface (6), the antenna feed pin (7) that is connected with circuit board feedback point contact-making surface (6) conduction, mobile communication terminal mainboard earthed circuit plate (2), it is characterized in that: be provided with the SMD inductance of general 0402 type between described circuit board ground end in contact face (4) and mobile communication terminal mainboard earthed circuit plate (2), inductance is mounted on the mobile communication terminal motherboard circuit plate.
4. mobile communication terminal antenna and motherboard circuit syndeton, comprise antenna (1), circuit board ground end in contact face (4), the antenna short circuit pin (3) that is connected with circuit board ground end in contact face (4) conduction, circuit board feedback point contact-making surface (6), the antenna feed pin (7) that is connected with circuit board feedback point contact-making surface (6) conduction, mobile communication terminal mainboard earthed circuit plate (2), it is characterized in that: be provided with the combinational circuit that resistance or electric capacity or inductor combination get up between described circuit board ground end in contact face (4) and mobile communication terminal mainboard earthed circuit plate (2), combinational circuit is mounted on the mobile communication terminal motherboard circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201087845U CN201041822Y (en) | 2007-04-28 | 2007-04-28 | A mobile communication terminal antenna and main board circuit connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201087845U CN201041822Y (en) | 2007-04-28 | 2007-04-28 | A mobile communication terminal antenna and main board circuit connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041822Y true CN201041822Y (en) | 2008-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201087845U Expired - Fee Related CN201041822Y (en) | 2007-04-28 | 2007-04-28 | A mobile communication terminal antenna and main board circuit connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041822Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910659A (en) * | 2017-10-16 | 2018-04-13 | 广东欧珀移动通信有限公司 | Circuit board assemblies and there is its terminal |
| CN111682324A (en) * | 2020-06-22 | 2020-09-18 | 华勤通讯技术有限公司 | Circuit and method for reducing SAR of antenna |
-
2007
- 2007-04-28 CN CNU2007201087845U patent/CN201041822Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910659A (en) * | 2017-10-16 | 2018-04-13 | 广东欧珀移动通信有限公司 | Circuit board assemblies and there is its terminal |
| CN107910659B (en) * | 2017-10-16 | 2020-04-10 | Oppo广东移动通信有限公司 | Circuit board assembly and terminal with same |
| CN111682324A (en) * | 2020-06-22 | 2020-09-18 | 华勤通讯技术有限公司 | Circuit and method for reducing SAR of antenna |
| CN111682324B (en) * | 2020-06-22 | 2022-01-21 | 华勤技术股份有限公司 | Circuit and method for reducing SAR of antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TCL COMMUNICATION (NINGBO) CO., LTD. Free format text: FORMER OWNER: SAGEM MOBILES RESEARCH AND DEVELOPMENT (NINGBO) CO., LTD. Effective date: 20120601 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: SAGEM MOBILES RESEARCH AND DEVELOPMENT (NINGBO) CO Free format text: FORMER NAME: NINGBO SANIMU BIRD RESEARCH CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315040 NINGBO, ZHEJIANG PROVINCE TO: 315000 NINGBO, ZHEJIANG PROVINCE |
|
| CP03 | Change of name, title or address |
Address after: 315040 No. 5, Lane 999, Yangfan Road, High-tech Zone, Ningbo City, Zhejiang Province Patentee after: Smrdn Mobile Telephone Research Development (Ningbo) Co.,Ltd. Address before: 315500 No. 999 Dacheng East Road, Zhejiang, Fenghua Patentee before: Ningbo Sagem Bird Research and Development Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120601 Address after: 315000 6th Floor, No. 5, Lane 999, Yangfan Road, High-tech Zone, Ningbo City, Zhejiang Province Patentee after: TCL COMMUNICATION (NINGBO) Co.,Ltd. Address before: 315040 No. 5, Lane 999, Yangfan Road, High-tech Zone, Ningbo City, Zhejiang Province Patentee before: Smrdn Mobile Telephone Research Development (Ningbo) Co.,Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20140428 |